BaBar & SuperB Martinez... · 2014. 10. 14. · BaBar & SuperB 8 Estudios fenomenológicos y análisis de datos en el experimento BaBar de la Factoría de B’s de SLAC (EEUU): violación

Fernando Martínez-Vidal IFIC, Universidad de Valencia-CSIC

Concurso-Oposición CSIC29 de Septiembre de 2004

BaBarBaBar & & SuperBSuperB

Fernando Martínez-Vidal IFIC, Universitat de València-CSIC

IN2P3IN2P3--MICINN meetingMICINN meeting

JanuaryJanuary 12, 2008, Madrid12, 2008, Madrid

MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008 F. Martinez-Vidal. BaBar & SuperB 2

Final collisions 12:43pm,Monday 7 Apr 2008

Runs 1-4

Runs 1-5

362 published as today475M Y(4S)→BB


×10 enhancement of world sample of Y(3S) & Y(2S) decays

• Enhance knowledge on spectroscopy– Missing SM ηb(nS), hb(nS)– Look for surprises

• Search for exotic physics, like– Light dark matter candidate χ– NMSSM light Higgs a1


• First strong evidence of D0-D0 mixing (May’07)• Unexpected discovery of many new states:

+ ηb (Aug’08)

[many of these already published]


• ηb decays mostly via two gluons, exclusive modes not known

• Search for bump in photon energy spectrum

Consistent with M1 transition (0.3-0.7)


• IFIC, University of Valencia-CSIC (5)– 1 Faculty, 2 PhD Staff, 2 Grad

• University of Barcelona (2)– 1 Faculty, 1 Grad

• LAPP-Annecy (7)– 1 Faculty, 2 PhD Staff, 4 Grad

• Ecole Polytechnique (5)– 1 Faculty, 2 PhD Staff, 1 Non-PhD

Staff, 1 Grad• LAL, Orsay (24)

– 8 Faculty, 1 PhD Staff, 8 Non-PhD Staff, 7 Grad

• Saclay (6)– 4 PhD Staff, 2 Non-PhD Staff

• Univ. Paris VI & VII (10)– 4 Faculty, 1 PhD Staff, 5 Grad

24 PhD(8.8%)

4 PhD(1.2%)

OCF 09 count (based on October 2008)

Operating Common Fund Basis

MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008

The “core” Physics Analysis Program(Intense Analysis Period, 2008-2010)

+ Y(nS) Physics (SM & Exotics)

• Precise extraction of D→Keν, πeν, KKeν, Kπeν form factors (LQCD)• LAL• Publications: PRD 76, 052005 (2007), PRD 78, 051101 (2008), Eur.Phys.J.C52, 975 (2007)

D0 mixing and CPV in D→KSπ+π-, KSK+K- (Dalitz method, golden)

• Measurement of CKM angle γ with GLW, ADS and Dalitz (golden) techniques• BaBar γ combination (Dalitz+ADS+GLW)• LAL, LAPP, Ecole Polytech., Paris VI&VII• Publications: PRL 95, 121802 (2005), PRD 78, 034023 (2008), PRD77, 111102 (2008), PRD78, 092002 (2008),…

• Measurement of B0 and B+ lifetimes, B0 mixing, and observation of CP Violation• Paris VI&VII, LAPP, LAL, Ecole P., Saclay• Publications: PRL 87, 091801 (2001), PRL87, 201803 (2001), PRL 88, 221802 (2002), PRD 66, 032003 (2002),…


Estudios fenomenológicos y análisis de datos en el experimento BaBar de la Factoría de B’s de SLAC (EEUU): violación de CP, retorno radiativo y Física del quark charmCICYT-IN2P3 2005-03, CICYT-IN2P3 2006-19F. Martinez-Vidal, IFIC, Valencia – A.M. Lutz, LAL

Estudio de las desintegraciones semileptónicas de hadrones charm en el experimento BaBar.MCCIN – IN2P3 2008 (NUC2008-000265)A. Oyanguren, IFIC, Valencia – P. Roudeau, LAL

Bilateral funding (history)R-ratio measurement in the BaBar experimentCICYT-IN2P3 2004, E. Grauges, UB – M. Davier, LAL

Producción de estados excitados en las desintegraciones semileptónicas de los mesones B y estudio de los sucesos con 4 jetsCICYT–IN2P3 PP99-1 (1998-2004)J. Salt, IFIC, Valencia – P. Roudeau, LAL

Estudio de la probabilidad de desintegración Z→bb y de las oscilaciones de los mesones B0-B0 mediante técnicas de análisis multidimensionalCICYT–IN2P3 PP89-1 (1992-1997)A. Ferrer, IFIC, Valencia – Ch. De la Vaissiere, Paris VI&VII

BaB

arD

ELPH

I

…among others


d d

s

s Ks

η’

B0 g

g~b s

+(δ 23

dRR)b

~R

s~R

bs

s

sd d

φ, ′η ,(KK )CP

KS0

If there is New Physics at the TeV scale it must have a flavor/CP structureNP must couple to the SM, and the SM violates flavor

New heavy quanta can be detected through precision measurement of processes involving loop diagramsStatistics of O(50 ab-1) is necessary to reduce the experimental error below the theoretical uncertainty for the most sensitive analyses Physics reach is complementary to LHCb:

many rare decays are not accessible at LHC sensitivity to off-diagonal term of squark mixing matrixtest of LFV in τ decays

BaBar → SuperB/SuperBelle

1034 luminosity to have measurable effects (anyhow) if NP particles are at EW scale

1036 luminosity to have measurable effects (anyhow) if NP particles are at TeV scale


Crab waist schemeSmall crossing area

IP

The accelerators


SuperB/SuperBelle

BASELINE

OPTION

New detector elements (BaBar)

Quite similar for SuperBelle(but larger backgrounds)

– Photon detection for DIRC quartz bars – Forward PID system (TOF or focusing RICH)– Forward calorimeter crystals (LSO)– Minos-style scintillator for IFR– Electronics and trigger – Computing – large amount of data

• Babar/Belle has been proved excellent detectors for B-physics ⇒ Use same approach and reuse many elements

• Moderate R&D and engineering required– Small beam pipe technology– Thin silicon pixel detector for first layer (~1 cm,

<0.5%X0, ~100 µm)– Drift chamber CF mechanical structure, gas and cell size– Photon detection for DIRC quartz bars

Better vertexing & better hermiticity important for many measurements


6 layers at radius from 1.3 cm to 14 cm, 4×more readout channels than in SVD2 (BELLE): Speed!

2 layers of pixel detectors

4 layers of strips

Beam-pipe (r=1cm)

SuperBelle Vertex Detector

SuperBelle has adopted DEPFET as the technology for the pixel detectors


• Spanish contribution DEPFETs Collaboration • Goals:

• Use DEPFET sensors in ILC vertex detector• Recently, use DEPFET in SuperBelle as intermediate project


SuperB Vertex Detector

Kevlar/carbon-fiber support ribCarbon-fiber endpiece

Carbon-fiber�support cone

Upilex fanouts

350 mre- e+

Beam pipeHybrid/readout ICs

Cooling ring�

30o

Si detectorsz=0

BaBar Silicon Vertex Tracker

40 cm30 cm

20 cm

Layer0

Layer Radius0 1.2 cm1 3.3 cm2 4.0 cm3 5.9 cm4 9.1 to 12.7 cm5 11.4 to 14.6 cm

Layer Radius0 1.2 cm1 3.3 cm2 4.0 cm3 5.9 cm4 9.1 to 12.7 cm5 11.4 to 14.6 cm

• The BaBar SVT technology is adequate for r > 3cm: use design similar to SuperB SVT• Layer0 is subject to large backround and needs to be extremely thin: > 5MHz/cm2,

1MRad/yr, < 0.5%X0

Striplets option: mature technology, not so robustagainst background.• Moderate R&D needed on module

interconnection/mechanics/FE chip (FSSR2) CMOS MAPS option• New & challenging technology• Can provide the required thickness • Existing devices are too slow• Extensive R&D ongoing (SLIM5-

Collaboration) on 3-well devices 50x50um2

Hybrid Pixel Option: tends to be too thick.• An example: Alice hybrid pixel module ~ 1% X0 • Possible material reduction with the latest

technology improvements• Viable option, although marginal

Layer 0Layers 1-5


Plans for SuperB/SuperBelle

We are interested to contribute to SuperB and/or SuperBelleGood projects for vertex detector construction (as intermediate project before

ILC), with similar schedulesSuperBelle: Layers 1-2, DEPFETs (~2009-2013)

DEPFET CollaborationSuperB: Layers 1-5, strips, FE chips (~2009-2015)

Good experience and infrastructure, lack of man power (yet)

Very interesting luminosity domain (L>50 ab-1) to explore between ~2014-2020Decisions to be taken during 2009, for project applications in 2010

B→τν

MH+=350 GeV

Higgs-mediated NP in MFV at large tanβ


Venue for the June 2009BABAR collaboration meeting

ValenciaJune 22nd to 25th, 2009


RD: (3.03 ± 0.16 ± 0.10) x 10-3

x’2: (-0.22 ± 0.30 ± 0.21) x 10-3

y’: (9.7 ± 4.4 ± 3.1) x 10-3

Best fitBest fit, χ’2 ≥ 0

+ No mixing: (0,0)

1 – CL =3.17 x 10-1 (1σ)4.55 x 10-2 (2σ)2.70 x 10-3 (3σ)6.33 x 10-5 (4σ)5.73 x 10-7 (5σ)

Contours at 1σ intervals

The no-mixing point is at the 3.9σ contour

• Analysis of the proper time distribution of WS events permits extraction of D0 mixing parameters y’, x’2

Evidence confirmed by Belle and CDF

Documents

BaBar & SuperB Martinez... · 2014. 10. 14. · BaBar & SuperB 8 Estudios fenomenológicos y análisis de datos en el experimento BaBar de la Factoría de B’s de SLAC (EEUU): violación